Just wondering if the techniques used in this example http://developer.apple.com/samplecode/PBORenderToVertexArray/index.html
have any relevance to the GLHeightfield texturing problem. Sadly I know next to nothing about OpenGL, but it strikes me that the example application does exactly what we're all looking for. Cheers, alx http://www.toneburst.net http://machinesdontcare/wordpress.com --- Alessandro Sabatelli <[EMAIL PROTECTED]> wrote: > I've been chasing this Rutt-Etra image for a long > time... > raster.jpg > It's great to hear you guys are going after it > again. > I had the luck of seeing Benton's Rutt-Etra in > person in New York > awhile back. > .xX > > > On Nov 28, 2007, at 11:22 AM, vade wrote: > > > Here is the code ive used to attempt this myself. > It is non > > functional, the texture coordinates created for > the VBO mesh are not > > 'useful', in the sense that they do not map to 0 - > 1 fro the edges > > of the quad, so while I can in fact texture the > quad, it only has > > one texel mapped. > > > > Ive asked the GL List about this after doing some > research. The > > usual answer is to use interleaved VBO arrays > which render out > > vertices, texture coordinates, normals, etc, all > within one > > interleaved buffer. That is beyond my skill :( > > > > Ive attempted to create a second VBO to "render" > out a set of > > texture coordinates, bind them before > gl_DrawElements, but to no > > effect (99.999 percent because I have little clue > what I am doing). > > > > Ive also heard the suggestion to use gl_GenCoords, > but again, I am > > far too novice a GL programmer to fully grok how > to use these > > suggestions. > > > > Here is my code, hopefully it will not bounce from > the list. > > > > > http://abstrakt.vade.info/ILOVETHEQCLIST/GLHeightField_Vade.zip > > > > FYIW, I personally know Bill Etra, and have been > trying on and off > > to get this working for him in a native app - to > make a Color 3D > > Rutt Etra performance application for him. Ive had > a pretty good > > version built in Max/MSP/Jitter, but the speed is > simply not there. > > This VBO method is incredibly fast. > > > > We both would be grateful to have a helping hand > with our > > difficulties! > > > > Thanks ! > > > > > > On Nov 28, 2007, at 11:57 AM, Alex Drinkwater > wrote: > > > >> Hi Pierre-Olivier! > >> > >> Thanks for getting back to me. > >> > >> On 28 Nov 2007, at 16:32, Pierre-Olivier Latour > wrote: > >> > >> Try the GLSL Grid patch > >> > >> I know about that one. > >> What I want is a heightfield grid though (rather > than > >> a static grid), that can be textured, lit etc. by > >> placing it inside Lighting/GLSL patches, and > inputting > >> a texture image, as well as the displacement > image. > >> The current Heightfield plugin can be placed > inside a > >> Lighting patch, but can't be properly lit, as far > as I > >> can tell. It also doesn't accept an image as a > >> texture, to be displayed on the surface of the > grid. > >> > >> > >> Cheers, > >> > >> Alex > >> > >> > >> > >> > >> > >> > >> On Nov 28, 2007, at 3:20 AM, Alex Drinkwater > wrote: > >> > >> Fingers crossed this will make it to the list > this > >> time. This is my fourth attempt to post this > message, > >> as my mailserver timed out trying to contact the > list > >> server after several hours on each of my previous > >> attempts. > >> > >> Does anyone know if it would be possible to > modify the > >> GLHeightfield > >> plugin so that it produces a mesh that can be > used > >> inside a GLSL patch > >> in Quartz Composer, or can be textured with an > image, > >> or lit > >> effectively using the Lighting patch? At the > moment, > >> it seems that the > >> mesh produced by the plugin does not play well > with > >> other QC patches > >> (unless I'm missing something basic here). At the > >> moment I'm not too > >> bothered with lighting the mesh, but I'd very > much > >> like to be able to > >> texture it with an image. > >> > >> I know it's just an example plugin, but it's > >> tantalisingly close to > >> what I I's like it to be able to do- just not > quite > >> there. > >> > >> Anyone any thought? > >> > >> Cheers, > >> > >> alx > >> http://www.toneburst.net > >> http://machinesdontcare.wordpress.com > >> > >> > >> > >> > ___________________________________________________________ > >> Want ideas for reducing your carbon footprint? > Visit > >> Yahoo! For Good > >> > http://uk.promotions.yahoo.com/forgood/environment.html > >> _______________________________________________ > >> Do not post admin requests to the list. They will > be > >> ignored. > >> Quartzcomposer-dev mailing list > >> ([email protected]) > >> Help/Unsubscribe/Update your Subscription: > >> > http://lists.apple.com/mailman/options/quartzcomposer-dev/pol%40apple.com > >> > >> This email sent to [EMAIL PROTECTED] > >> > >> ________________________________ > >> Pierre-Olivier Latour - [EMAIL PROTECTED] > >> Technologist - Apple, Inc. > >> > >> > >> > >> > ___________________________________________________________ > >> Yahoo! Answers - Got a question? Someone out > there knows the > >> answer. Try it > >> now. > >> http://uk.answers.yahoo.com/ > >> _______________________________________________ > >> Do not post admin requests to the list. They will > be ignored. > >> Quartzcomposer-dev mailing list > ([email protected] > >> ) > >> Help/Unsubscribe/Update your Subscription: > >> > http://lists.apple.com/mailman/options/quartzcomposer-dev/doktorp%40mac.com > >> > >> This email sent to [EMAIL PROTECTED] > > > > _______________________________________________ > > Do not post admin requests to the list. They will > be === message truncated === ___________________________________________________________ Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html _______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
